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SolrQuery::getFacetQueries is a method in the PHP Solr extension that is used to retrieve facet queries from a Solr query response.

When making a Solr query, you can include facet queries in the request to get counts or statistics for specific query conditions. SolrQuery::getFacetQueries retrieves these facet queries from the response.

To use SolrQuery::getFacetQueries:
1. Create a SolrQuery object.
2. Set the necessary query parameters using methods like setQuery(), setFacet() etc.
3. Execute the query using a SolrClient object.
4. Retrieve the response using the query response object.
5. Use SolrQuery::getFacetQueries() to get the facet queries from the response.

Here is an example:

php
// Create a SolrQuery object
$query = new SolrQuery();

// Set the query parameters
$query->setQuery('some_query');
$query->setFacet(true);
$query->addFacetQuery('category:electronics', 'category:clothing');

// Execute the query using a SolrClient object
$client = new SolrClient($options);
$response = $client->query($query);

// Retrieve the response
$facetQueries = $response->getResponse()->getFacetQuery();

// Iterate over the facet queries
foreach ($facetQueries as $facetQuery => $count) {
echo "Facet Query: $facetQuery - Count: $count\n";
}


In this example, the Solr query includes two facet queries: 'category:electronics' and 'category:clothing'. SolrQuery::getFacetQueries() retrieves these queries from the response and we iterate over them to print the query and its count.

Please note that this example assumes you have already set up Solr and installed the PHP Solr extension.